Elevator



4 T. J. STURTEVANT AND W. T. DOYLE.

ELEVATOR. APPLICAHON FILED ocT. 8. 1911.

Patented J une 8, 1920.

3 SHEEIS-SHEET I.

Invenor: Z V

T. J. STURTEVANT AND W. T. DOYLE.

ELEVATOR.

APPLICATION FILED OCT. 8, 1917.

Patented June 8, 1920.

3 SHEETS-SHEET 2.

Inventor.

T. J, SI-URTEVA-NT AND W. T. DOYLE,

ELEVATOR.

APPLICATION man 00L 8. 1917.

Patented June 8, 1920.

3 SHEETS-SHEET 3- UNITED W'E THO AS JQSTURTEVANT, or WELLESLEY, AND WILIiIAlVf T. hoYLE, or steam, MASSACHUSETTS, nssrenons T s'run'rnvan'r MIL coivrrnnv, on Bos'roN,

MASSACHUSETTS, A CORPORATION or MA NE.

ELEVATOR.

To all whom iii-may concern: 7

Be it known that we, THoMAs-J. STURTE- 'VANT and WILLIAM T. DoYLE,'citizens of the United States, and residents of 'Wellesley,

county of Norfolk, and Boston, county of Suffolk, and State of Massachusetts, respectively, have invented an Improvement in Elevators, of which thefollowing descrip tion, in connection with the accompanying drawings, is a specification, like characters onthe drawings representing likeoarts.

- The invention hereinafter "descri ed .re-

lates to elevators, and more particularly to 7 means for delivering the materialjto be to a separatorhaving a screen which grades turned to the elevator and'lifted thereby to.

the material into fines and tailings. "The finesare delivered to a miner, and the tailings are reduced in a PHlVGI'lZGT' and rethe separatonwhere they are graded again.

. ness. After the material is thoroughly This process is continued until the entire batch has been reduced to the requiredfinemixed, it is conducted to the weighing and bagging device. Successive batchesarefed into the apparatus and similarlytreated.

The elevator hopper to have the capacity required,formerly had to be of considerable depth, and its mouth had to beat substantially the level ofthe floor or ground, in order that the batches might be dumped into the hopper from carts substantiallyon the level of the mouth of the hopper. As a consequence, it was necessary to construct a deep pit to receive the lower end of the elevator, in order that the mouth of the hopper should be at the required level. This was objectionable for ;various reasons. A mong others, it added objectionably tothe expense of installingthe apparatus, and esjects, provides a construction whereby the pecially where the same was located on marshy land where the pits had to be of water-tight construction.

'The present invention, among other obbatches may be fed tothe elevator without the necessity for the deep lower en'dof the elevator.

' The-elevator usually comprisesupp lower wheels connected by-an endless belt pit to receive the Specification of Letters Patent. 7 v I J ne s, 192 0; Application filed'October s, 1917. SerialNo. 195,218. i

er and having buckets secured at intervals thereon for conveying the material from the lower end of the elevator casing to the upper end thereof. The belt and buckets experience heavy dutyand wear, such, that after pro longed use thereof, the belt sometimes breaks and the belt 'and buckets fall in a confused heap and choke the lower end of the'casingz. I-Ieretofore, considerable'difficulty has been experienced in obtaining accessto the parts, 7

in order that they may be removed from the casing, 'repairedand reinstalled in proper woi-lriiigpositioi in thecasing vAlso, the materialsfed into the casing and elevated, are frequently of'a character, such that they tend topack in and chokethe lower end of the casing,rendering 1t necessar'y 'to have.

access thereto for the purpose of removing' the packed material from the bottom of the;

material from'the belt,*-'buckets and other parts of the elevator.

vide a casing having a construction'such that ready accessmay be 1 had as; the interior thereof for the purpose of, repair and cleaning of the parts, referred to. I

The character of the invention may be best un'derstood'by reference to the following description of one good form thereof shown in the accompanying drawings,

wherein V I Figure V1 is a side elevation of an elevator embodying the invention;

casing, and for the purpose of cleaning the Another object of the'invention, is to pro 'Fig. 2 is a plan of the elevator show-n in Fig.1; r c s Fig. 3 on an enlarged scale is aside elevation of a head at;the upper end of the casing constructed of sections which may be readily separated to permit access to the shaft, wheel, belt and buckets at the upper end of the casing; Y I

, Fig. 4 on anenlarged scale is an elevation of a part'of the mechanism for lifting a batch of material-and dumping the same 7 into the hopper adjacent the lower end of the elevator; I

Fig. 5 is a vertical section through the breakerfeeder and; its casing, showing the;

latter in position to. cut ofl communication between the casing and the elevator;

.Fig. 6 'is'a view similar to Figi'5 showing the casing in position permitting communi cation between the same and the elevator to to deliver material from the former to the latter; V

7 is a horizontal section through'the" breaker feeder and its casing taken" on" line '7-7 ofFig. c Fig. 8 onanenlarged scale is an end'elevation of-the lower portion of the elevator; casing showing the door construction whereby access be had to the lower end of the;

- Fig.

casing;

I tion of the portion of the elevator casing 7. showing the, door construction providing access to the casing beneath the breaker feeder 'Fig. onan enlarged scale isatransverse section taken on line 10-10 of Fig. 8

' adjustment. a Referring r v I f shownthereinas embodying the invention v v thr gh one. of the locking devices for" the 11 and 25 I Fig..l1 is a perspective view showing the locking device Hi lJWO different positions'of to the drawings, the apparatus comprises an elevator, inthe presentinstance ofthe invention, consisting of a series ofbuckets 1 mounted on an endless belt 3 v in the' formo'f a chainconnecting upper and lower wheels 5 and Ten shafts 9 and 11 journal'ed in suitable bearings in a casing or housing 13 of sheet metal. This casing may be .built of sections including a lower seetionlo'r boot 15 and a head 17 at the top ef the casing. To permit access to they up sections l'l' and I17,-(Figs. 1 and meet- 7 ing at the upper. shaft, said'se'ctions being. detach'a'bly secured together and to the casper shaft, wheel, belt .andbuckets at tilt-3 13013 of theic'asin'g, thehead maybe formed of ing by bolts or othersuitable means. One offthe sections may have adoor 18 hinged thereto to permit inspection of and limited access to the interiorofthe head.

When itis necessary to have a greater access to;.the interior ofthe head, the. bolts therein may be removed, and the sections thereof may 7 be move'd apart from their positions shown in full lines to their positions'shown in dotted lines in Fig. 8. When moved apart as 1 described, they will desirably furnish convenient access, vto the shaft, wheel, belt and buckets at the top of the casing,perinittingthe same to be conveniently installed,- cleaned or repaired;

' furnish. access to the lower end of the cas ng,the latter may have alarge opening 19 extending be'neaththe lower wheel and I ga' 'j substantial distance above the wheel. 7 'Prefei ably, this'ope'ning is sufficiently high 765 to allow the operator toreadily enter the Fig 9 011 an enlarged scale is an end elevacasing. This opening isnormally. closed by a door or panel 20 having margins over; lapping the portions of the casing adjacent the opening. To secure the door closed position, suitablemeans' may be provided, in the present instance of the invention, in theform of locking devices, each comprising a' handle 21 (Figs. 10Vand 11) having a hub 23pivotally mounted on a bolt 25 secured V .1

to the casing, and projecting upward into a recess 1n said hub; A cam or locklng mem- 'ber 27 may be formed integral with Said handle and hub be urgedinward toward the door and casing by a coil' spring :29 mounted in the hub recess and confined .be tween the head of. the bolt and an end of said hub. v v v The construction is such, that when the handle is rocked to the, position shown in full lines jin Fi g. 1O, -and iii-dotted lines in Fig. 11, the cam will rideupover the margin of the door and tension the spring, and thereby hold the door securely onto the casing, without possibility of leakage of dust between them. 7

To furnish additional access tothe lower endof the casing for purposes of cleaning I and repair of parts'thereim-the casing may be provided with an opening 29opposite the;

opening 19, referred to, and normally-closed by a door 31 held in closed position by locking devices 33 similar to thosede the door 20. I

The :means. for feeding the batches to the elevator, in the present instance of the inscribed for and 7) conveniently in the form of" a drum 41. made of two fpartsjsecured together'with hollow trunnions 13" fastened to opposite ends thereof journaled --in; bearings in a standard 45 vator, n w

Suitable valve means is provided for ad mitting thematerials from the drum to the. elevator. In the present exemplifi cation of the invention, this valve meanscomprises a port 4L7 igs. 5 and 6) in the curved'wall let mouth 49 of the elevator housing, said mouth having a flange 5 l c'urved to con- 1'05 adjacent the bottom of the eleof th e drum adapted to register with an' in V form to the contour of the casing. -VVhen the drum is 'rockedin one direction, the port -will register with said mouth (Fig.6) and 100 vention, comprises a casing (Figs. 1, 5, 6

may be provided, comprising a series of star-shaped or toothed members 55 mounted on a square portion of a shaft 57 journaled Y 1 in the hollow trunnions of the drum. This" shaft may have a pulley 59 (Figs. 1 and 2) fast thereon, driven by a' belt'(not shown) from any suitable source of power.

= A receiver may he.provided of sufficient size to holda batch weighinga ton or other predetermined amount. "In the present instance of the invention, this receiver is in the form of abox 61 (Figs. 1 and 2) of sheet metal or other suitable material, having an open top substantially level with the floor or ground, in .order that a conveyance may be moved up to and conveniently discharge the hatch into thebox. Preferably, the box is made shallow, so that its bottom will need to be only a short distance beneaththe level 63 (Fig. 1) on which the cart or other conveyance stands when dumping a batch therein. In order thatthe box may be of the requisite size, it is necessary to form the same of substantial. width. As

shown herein, it will be noted that. the box is considerably wider than the elevator.

Suitable means is provided to conduct the material from the box to the drum containing the breaker feeder. In-the present instance of the invention, a hopper 65 of sheet metal or other suitable material is rovided for this )UI ose havin an oaen P a s end communicating with an open end of the box, and preferably somewhat deeper than the depth of the box, in order to catch the material if heaped somewhat above the top of the box. The hopper tapers toward and is connected to'a neck 67 formed on the 1 drum.

The receiver is secured to the hopper, and

the hopper is secured to the drum, the construction being such, that said parts may be tilted on the trunnions of the drum aboutv If the axis of theybreaker feeder'as a fulcrum.

- the receiver is substantially flush with: the

' on an-arm 115 .rials. )Vhen the parts are tilted to the posi- WVhen the parts are in the horizontal position shown in full lines in Fig. 1, the top of floor in position to receive a batch of matetion shown in dotted lines in Fig. 1', the

batch in the receiver will flow "therefrom through the hopper to the drum. When said parts are in horizontabposition, the

drum will be in a position to close the inlet tal positionin readiness to receive another batch.

- a q 7 Suitable meansmay be provided to en-- able tilting of the parts for thepurposes described. To accomplish this, in the present instance of the invention, wire ropes 69 (Figs. 1 and 2) or other flexible members have their lower ends connected to a cross bar 71 secured to the bottom of the receiver,

and their upperends anchored to drums 7 3 (Figs. 2 and 4c) mounted fast on a shaft 7 5 journaled in bearings 77 on inclinedfframe members 79. having theirupper ends connected to a horizontal bar 81 secured to the elevator housing. Said shaft is also journaled in hearings in brackets 83 mounted on the elevator housing. a I p f p To rotate said shaft, a gear 85 is mounted thereon and driven by a pinion 87 fast on a counter sha'ft'89 journaled in bearings 91v mounted on the elevator housing. A large gear 93 on saidcounter shaft isdriven by a pinion 95 fast on a second counter shaft 97 journaled in bearings 99 mounted on the elevator housing. A pulley. 101 is mounted loose on .thefshaftf97. and adapted to be" driven by a belt (not shown) able sou'rce of power.

To connect said pulley with said shaft at the times desired, suitable clutch means may from any suitbe provided, in the present instance of the invention, comprising a cone member 103 (Fig. having a hub 104i splined to the shaft 97and adaptedto fit into and frictionally' grip a conical recess 105 in said pulley.

To shift the clutch, hub may be grooved to rec'eivea' ring 107 connectedto a hand lever 109 pivoted on a bracket 95 mounted on-the elevator housing; j

To hold the parts in dischargingposition and check the rocking thereof backto the receiving position, suitable brake means may be provided, in the present instance of the invention, comprisinga brake wheel 1.11

conveniently integral with the cone'member 103 and cooperating with a brake shoe 113- to. r

Theconstruction is such that the hand lever serves thedual functionof operating of the hand lever, referred I I the clutch and. the brake. when the handle thereby connecting the belt-pulley with the shaft 97,- and through the train of gears described, driving the drums which will wind the wire ropes thereon, thereby tilting the receiver to its dischargingposition. After the receiver has attained 1ts proper 'eleva- 7 tion, the hand lever is shifted to-open the --is shifted in one. direction, the clutch will p be closed the brake will be released,

clutch and apply the brake,thereby holding the receiver in said position until the batch is discharged therefrom through the hopper and. drum to the elevator. i After the batch has been discharged, the'brake'is released sufficiently to allow the receiver to 'dropback' to its position in readiness to receive' another batch. a 7 7 By theconstruction described,ithe batch receiver may be made very shallow,so that when in its horizontal position, it will extend but a short distance beneath the level of the floor or ground. Asa result, merely a shallow pit is required therefor, .whioh may be cheaply and. quickly constructed.

Also, the overall height of the elevator does not need to be so great as when the deep pit is used, thereby resulting in a furtherim- 'portant economy in construction.

The tilting mechanism for fthefreceiverenables'the receiver to be easily rocked up toits discharging position, and quickly returned to its receiving position; The valve controlling the feeding of the batch into the, elevator is automaticallyopened andclosed .in the course of the rocking'of the receiver open the direction of rotation of the breaker feeder and the direction of discharge from the drum, indicated by arrows in Fig. 6, is 1 such that the draft therefrom will be upward in the same general direction as the- I draftproduced by the buckets as they sweep up pastvthe valve port. As a consequence,

- blowing of dust back into the hopper is prethe operation of' the vented at all times in apparatus. I;

The sectional construction of the head of "the elevatorv casing-and the large doors in '40;

thekboot withhthe'ir easily operated hand locks; enable ready access-to the parts for replacementand repurposes of cleaning, pair thereof as required.

7 It will be -7understood that is not limited to the specific embodiment showmbut that extensive deviations maybe 7 made therefromjx'vith'out departing from the having a port therein, a hopper connected to said casing, said'hopper and casmgbe ng movableto bringlsa'id port .into and out of 4 icommunication'with said inlet, and means spirit and scope ofthe appended claims. lVhat is claimed is l' The combination with an elevator, of'a housing therefor having an inlet, a' casing for automatically closing said housing inlet when said port is out of communication with said inlet. we

2.";The combinationiwitlran elevator, of

a housing-therefor havinglan inlet, a casing having a port movable to and from reg1sregistration with saidrinlet.

the invention tration with said inletfandfa wall for clos lng said inlet, a support, and receiver mounted to rock on said supportufrom a re- 'ceiving position to a position to discharge material into said casing; I l 3. The comblnatlonfwlth an elevator, of a housing thereforhavingan inlet, asupport having bearings thereon, a casing having a delivery port, andhollow trunnions'j'oun} naled in said bearingafa shaft journaled in,

said hollow trunnions, and abrealzer feeder mounted on said shaft in said casing, said casing and its trunnlons being adapted to rock tobrlng saidport' into and out of 4. The combination withan 'elevator, of a casing therefor,"a receiver havingan' opentop to receive 'a' charge of material -;when said receiver s in a substantlally hor zontal position, means totilt said "receiverto de liver thematerial t'hroughfoneend thereof,

means to conduct the'material-from said:

end to'the elevator casing, a valve operable on movement of said receiver for permittingor preventing 'passage of'material from k said conductinganieans to said casing; The comb nation wlth an elevator,'of a fixed casing there'fOr' mOiInted in upright position andhaving an inlet opening adjacent the lower end thereof, a feed casing for COIIIIIHHUCM'LIOH with said openmg,are-

ceiver communicating with said feed cas- 11191,}11621518 to rock sa d receiver to a' po'sI- tIOII' fOI' receiving a charge of material and to a 7 position to deliver the material into said feedcasing, and arotary feedermount ed in saidfeed casing for feeding the ma-' terial' therefrom through sald lnlet "open ing into said fixed casing to be elevated 'by said elevator; v

6. An elevator, comprising, in combine. tron, a'single chamber casing having a boot" at the lower end thereof'and' a head at the upper end thereof having separable sections,

ashaft journaied in hearings in said boot, a; shaft journaled. in'bearings adjacent the 'tcp ofsaid casing at the juncture of said head sections, butindependently of said sections, means detachably to secure ,said

head sections to the top .ofsaid casing,

wheels on. said shafts, an endless carrier connecting said wheels and havlng buckets large to admit a man into said boot for means to secure said door in closed positi0n.j

' In testimony whereof we have names to this specification.

Lthereon, a' door forsaid boot suiiicientlyaccess to the elevator parts therein, and

dust-tight signed our TrioM-As J. ST'URTEVANT.

WILLIAM T. DOYLE. a 

